Match the following.

List I
  1. Caledonian orogeny
  2. Hercynian orogeny
  3. Alpine orogeny
List II
  • About 240 million years ago.
  • About 320 million years ago.
  • About 30 million years ago.
Correct Answers
1. About 320 million years ago. 2. About 240 million years ago. 3. About 30 million years ago.